Introduction:
Background: Single-bundle autologous hamstring tendon reconstruction is a surgical procedure used primarily in orthopedics. To investigate the impact of using autologous hamstring tendon single-bundle restoration in conjunction with braided threads on both joint stability and clinical efficacy in patients suffering from posterior cruciate ligament (PCL) rupture. There are relatively few studies on the diagnosis and treatment of posterior cruciate ligament.

Material and methods:
methods: Total of 106 patients diagnosed with PCL rupture were randomly assigned to the control group and study group, and each group consisting of 53 instances. The control group received autologous hamstring tendon single-bundle reconstruction, whereas the study group received autologous hamstring tendon single-bundle reconstruction together with braided thread treatment. The comparative rates of treatment success and satisfaction, complication occurrence, pre-and post-surgery joint activity indicators, gait parameters, knee joint function, and joint stability are assessed.

Results:
Results:The study group showed a significantly higher rate of excellent and good treatment outcomes compared to the control group, with a statistical significance of P<0.05. After 12 months of surgery, study group showed significantly higher joint activity index, stride length, stride speed, and Rasmussen score compared to the control group.

Conclusions:
conclusion: The single-bundle reconstruction combined with braided thread has good clinical efficacy in patients with PCL rupture and more effectively improve the patient's joint stability.